Accession Number:

ADA024265

Title:

Aspects of Sound Speed Structure and Related Water Properties in the Gulf of Mexico, June-December 1969.

Descriptive Note:

Final rept.,

Corporate Author:

NAVAL OCEANOGRAPHIC OFFICE WASHINGTON D C

Personal Author(s):

Report Date:

1975-10-01

Pagination or Media Count:

60.0

Abstract:

Oceanographic data collected in the Gulf of Mexico during June-December 1969 indicate that the dominant modifier of sound speed structure and related parameters is the East Gulf Loop Current and associated waters. Westerly migration of a detached East Gulf Loop eddy radically altered local sound speed structure in a period as short as one month, while sound speed structure in the eddy remained essentially unchanged during the survey period. Existence of a relic eddy in the western gulf was suggested by temperature-salinity-oxygen relationships. Frequency distributions of sound speed within the thermocline are examined and the existence of two primary sound speed regimes is established. Examples of the effects of the detached eddy on sound ray paths in the thermocline are shown. Use of thermal structure measuring devices to monitor regime movements and to locate their boundaries is discussed.

Subject Categories:

  • Physical and Dynamic Oceanography
  • Acoustic Detection and Detectors
  • Acoustics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE